number system

Maths in a minute: Binary numbers

How do you write numbers as string of 0s and 1s?

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Why the answer to any sum is 10

Learning mathematics involves a progression to higher and higher concepts, building on the foundations of what we have already learnt. But Andrew Irving and Ebrahim Patel explain that no matter how high your mathematical knowledge reaches you must never lose sight of your foundations, no matter how basic they may seem.

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Colouring by numbers

How does a computer understand the colours to be displayed on the monitor's screen? It's all about red, green and blue and numbers written in a special way.

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The fabulous positional system
According to one mathematician, god created the whole numbers, with everything else being the work of humanity. Why, then did god not equip us with a good way of writing them down? Chris Hollings reveals that our number system, much used but rarely praised, is in fact a work of genius and took millennia to evolve.
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Editorial

The Plus anniversary year — A word from the editors

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Not just knots: the secrets of khipu
The Inka way of counting
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  • Maths in a minute

    Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

  • Chocolate and mayonnaise
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    What do chocolate and mayonnaise have in common? It's maths! Find out how in this podcast featuring engineer Valerie Pinfield.

  • From clicks to chords
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    Is it possible to write unique music with the limited quantity of notes and chords available? We ask musician Oli Freke!

  • The lungs of the Earth

    How can maths help to understand the Southern Ocean, a vital component of the Earth's climate system?

  • SBIDER Presents: Shining a light on COVID modelling
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    Was the mathematical modelling projecting the course of the pandemic too pessimistic, or were the projections justified? Matt Keeling tells our colleagues from SBIDER about the COVID models that fed into public policy.

  • Mathematical snapshots: Daniel Kreuter

    PhD student Daniel Kreuter tells us about his work on the BloodCounts! project, which uses maths to make optimal use of the billions of blood tests performed every year around the globe.